1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 242Get this manual
BRAKE SYSTEM Remove the oil seal, piston and springClean the ins ide of the cylinder and reservoir with brake fl uid Check the oil seal, piston boot, primary cup and secondary cup for fatigue or damageCheck the master cyli nder nd piston for abnormal scratches
PRIMARY CUP OIL SEAL
SECONDARY CUP
INSPECTION
Measure the master cy linder IDSERVICE LIMIT: 12.755 mm (0.5022 inl Measure the master cylinder piston ODSERVICE LIMIT: 12.645 mm (0.4978 in)
ASSEMBLY
CAUTION:
Keep the piston, cups, spring, snap ring and boot